Thank you to both of you. I checked the compound path. It's a no on that.
It is a Illustrator file with four separate illustrations, each drawing is made of colored shapes. There is only one layer. All is grouped. It is a Mac, Adobe Illustrator.ai file.
My boss just told me to forget about it, she is using the images as they were sent. She originally wanted to change some of the colors and to move a shape back to front. When ever clicking on a shape with the selection tool (v) she found everything was grouped. When she tried to ungroup the document Illustrator wouldn't acknowledge that anything was grouped. I asked about layers, there was one layer. The creator said, they hadn't done anything special. That is where the question started meanwhile curosity still grips.